Heating-furnace.



(No Model) L. s. BAKER. HEATING FURNACE.

(Application filed May 11, 1901.)

WITNESSES V Attorneys.

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ATENI FFICE.

LYMAN S. BAKER, OF

CAMDEN, MICHIGAN.

HEATING-FURNACE.

SPECIFICATION forming part of Letters Patent No. 696,791, dated April 1,1902.

Application filed May 11, 1901.

To all whom it may concern:

Be it known that I, LYMAN S. BAKER, a citizen of the United States,residing at Camden, county of Hillsdale, State of Michigan, haveinvented a certain new and useful Improvement in HeatingFurnaces; andIdeclare the following to be a full, clear, and exact description of theinvention, such as willenable others skilled in the art to which itpertains to make and use the same, reference being bad to theaccompanying drawings, which form a part of this specification.

This invention relates to heating-furnaces, and has for itsobjectanimprovementin that class of furnaces used for domestic heating.

In the drawings, Figure 1 is a vertical section from front to rear ofthe furnace. Fig. 2 is a horizontal section at the line b b of Fig. 1.Fig. 3 is a horizontal section at the line a a, of Fig. 1. Fig. 4 is ahorizontal section at the line of Fig. 1. r

The furnace consists of an external casing 1, square or rectangular inform. Within this are located the ash-pit, fire-pot, combustion-chamber,smoke-gathering fines, and airheating chamber of the furnace.

The ash-pit 2 is provided with a clear-out door 3, and on the ash-pitrests a fire-pot 4., formed in the shape of a reversed truncatedpyramid. At the bottom of the fire-pot and I between the fire-pot andthe ash-pit is a shakinggrate 5 of any approved construction. Above theash-pit is a combustion-chamber 6, and this combustion-chamber isdivided from the air-heating chamber, whichlies above it, by a diaphragm7, through which there are holes for the smoke-collecting pipes 8, 9,10, and 11 and a hole for the magazine-passage 12.

On the lower side of the diaphragm 7 are secured holding-strips 15 and16, which engage with flanges 17 and 18, made at the top of arectangular magazine-spout 13, and the spout 13 is removable from thecombustionchamber and can be removed anda spout of difierent length putin its place, or it can be entirely removed to enable the furnace to beused as a wood-burner.

At the top of the first air-heating chamber It is a diaphragm 19,through which are pas- Serial No. 59,764. (No model.)

sages for the pipes 8, 9, 10, and 11 and through which the upper end ofthe fixed part of the magazine spout projects. A removable andadjustable part 20 of the magazinespout engages in the upperend of thefixed part 12, and a section extends out through the side walls of thefurnace-jacket, where it is easily reached, and through it coal can beintroduced into the magazine and into the fire, making the furnace abase-burning furnace, if desired.

In the upper heating-chamber 21 the pipes 8, 9, 10, and 11 converge to asmoke-dome 22, from which the smoke-exit pipe 23 leads to the chimney.Dampers 2 L and 25 are provided to close the smoke-pipe, and these aremade in two sets, so that the smoke-exits may be partly closed orentirely closed or entirely open, as may be desired.

An air-flue 26 is made as an attachment to the door 27, and the air-flue26 leads from the upper part of the door downward to a central point inthe combustion-chamber just over the middle part of the fire-pot.Provision is thus made for the introduction of a secondary supply of airinto the combustion-chamber and substantially into the middle of thespace above the fuel.

The fire-pot and combustion-chamber are both rectangular, and thesmoke-fines are located in the corners above the corner parts of therectangular fire-pot, thereby tending to produce a directdraft throughthe corner parts of the fire-pot and'more perfect combustion.

What I claim is In a furnace for heating purposes, in combination with arectangular fire-pot, a rectangular combustion-chamber thereabove, aheating-chamber above said combustion-chamber, and smoke-outlet pipeslocated above the corners of the fire-pot, extending, and converging toa common center, in said heatingchamber toward the top thereof.

In testimony whereof I sign this specification in the presence of twoWitnesses.

LYMAN S. BAKER.

Witnesses:

B. R. ALWARD, O. D. CHESTER.

